Hydraulic cylinder

FIELD: mechanical engineering.

SUBSTANCE: hydraulic cylinder comprises power cylindrical hydraulic mechanism that receives main hollow piston made of two members of different diameters, pressure and drain hoses connected with the power cylindrical hydraulic mechanism through the control block, and working member connected with the rod. The working member is made of two working members. The first working member is movable and is secured to the main tip provided with plug and mounted in the first face of the power cylindrical mechanism for permitting reciprocation along the longitudinal axis of the power hydraulic mechanism. The second working member is mounted from the side of the second face of the power cylindrical hydraulic mechanism. The pipe is mounted with a spaced relation to the inner surface of the rod. The control unit is mounted on the pressure-tight housing mounted on the side of the power cylindrical hydraulic mechanism. The space of the power cylindrical hydraulic mechanism receives bearing washer that is arranged along the longitudinal axis of the pressure-tight housing.

EFFECT: improved structure.

4 cl, 4 dwg

 

The invention relates to mechanical engineering and can be used in devices to lift and hold cargo, extension or retraction of the structural elements and move various objects, mostly during the rescue and demolition work.

Known hydraulic tool, which can operate in the mode of a hydraulic cylinder containing a power cylindrical hydromechanics (cylinder) with the control unit, the pressure and drain the hoses and two operating lever, each of which has two mounting holes, through which he by a swivel mechanism attached to the housing of the power hydromechanical and kinematically connected with the piston of the hydraulic cylinder by means of a movable connection with its auxiliary holes with the crank mechanism (EN 2116872 C1, 1998).

This device allows the extension and coupler elements of structures, lifting and moving of goods. However, it is not secure, including due to the presence of the turning mechanism.

Of the known devices is the closest to the invention is a hydraulic tool that can operate in the mode of a hydraulic cylinder containing a power cylindrical hydromechanics (cylinder)provided inside the main hollow of porn is m, consisting of two parts of different diameters, the smaller of which is made elongated and forms a rod, and located along the longitudinal axis of the cylindrical power of hydromechanical tube connection (its rod end to the control unit), the pressure and drain hoses, hydraulically connected with the power cylinder hydromechanical through the control unit, and the working body, mechanically connected with a rod (EN 44073 U1, 2005). Working body of this device is made in the form of two movable plates, provided with fixing holes, for more, for example, tightening elements and teeth to effect the handling and separation of structural elements. The relationship of the working body with the rod of the power cylinder hydromechanical this device is made in the form of a rod mechanism providing rotational (turning) moving the movable plates. The control unit it is fixed directly to the housing of the power cylinder hydromechanical, and the tube connection rod end with the control unit attached to one end of the control unit, and the other is in the rod cavity. In the movable plates made of spiral grooves filled with grease.

This device is more reliable and can be used for rescue and demolition work, for example, for lifting,holding, moving and pulling of loads and deformations of structural members. However, its operating efficiency is not high enough due to lack of high develop pushing (pushing) force, due to the cylindrical design of the power hydromechanical, and a lack of stability, especially at high loads, due to the intermediate element in the form unstable to the loading rod mechanism.

The problem solved by the invention is to create a hydraulic cylinder, which is devoid of the disadvantages of the prototype. Technical result provided by the invention, is to improve the operational efficiency of the hydraulic cylinder.

This is achieved by hydraulic cylinder containing a power cylindrical hydromechanics (cylinder)provided inside the main hollow piston consisting of two parts of different diameters, the smaller of which is made elongated and forms a rod, and located along the longitudinal axis of the cylindrical power of hydromechanical tube connection, pressure and case drain hoses, hydraulically connected with the power cylinder hydromechanical through the control unit, and the working body, mechanically associated with the shaft, work the body in the form of two R the working elements, the first of which is made movable and fixed on the supplied stopper main tip is installed tightly in the first end of the cylindrical power of hydromechanical with the possibility of reciprocating movement along the longitudinal axis of the cylindrical power of hydromechanical, and the second working element is located on the second end of the power cylinder hydromechanical, with tube connection placed with a gap relative to the inner surface of the rod, the control unit is located on the supplied hole communication with the control unit sealed enclosure mounted on the side surface of the cylindrical power of hydromechanical and power inside cylindrical hydromechanical along the longitudinal axis of the sealed housing thrust washer made it cross-hole connection with the control unit and the axial hole is hermetically inserted in the tube connection. Work items can be made removable. The second work item can be made stationary and fixed on the outer side of the installed tightly on the second end of the power cylinder hydromechanical plugs, inside which there are fixed the ends of the tube connection. In power cylindrical gidromehanizm coaxially with the main hollow piston on the other side supports the second washer may be placed is similar to the main additional hollow piston, in this second work item is made movable, mechanically connected with the piston rod additional hollow piston fitted and fixed on the tube additional tip is installed tightly in the second end of the power cylinder hydromechanical with the possibility of reciprocating movement along the longitudinal axis of the cylindrical power of hydromechanical. Side of each movable working element between the rod and the inner wall of the cylindrical power of hydromechanical can be installed tightly Buchs, secured by nuts on the appropriate end of the power cylinder hydromechanical.

Figure 1 shows a General view of a hydraulic cylinder with a single piston rod and a control element in the form of a handle. Figure 2 shows a General view of a hydraulic cylinder with two rods and a control element in the form of a handwheel. Figure 3 shows the design of a hydraulic cylinder with one rod in the cut. Figure 4 shows a design of a hydraulic cylinder with two rods in the section.

The hydraulic cylinder in one of the variants of its structural embodiment contains power cylindrical hydromechanics (cylinder) 1 control unit 2, the control element 3 which may be made in the form of arm (figure 1) or handwheel (figure 2), a head 4 and the drain 5 is ukawa and the working body, made in the form of a movable working element 6 and the fixed work item 7 (1, 3). Pressure 4 and the drain 5 of the sleeve is hydraulically connected with the power cylinder hydromechanical 1 via the control unit 2. Each of the operating elements 6, 7 may be performed, for example, in the form of emphasis (as shown in the drawings), the nozzle with hook, wedge, heel, and other operating elements 6, 7 can be made removable. Power cylindrical hydromechanics 1 is equipped with nested within the main hollow piston 8, which consists of two parts of different diameters, the smaller of which is made elongated and forms a rod 9, for example, with a diameter of 38 mm Large diameter part 10 may have, for example, a diameter of 50 mm Along the longitudinal axis of the cylindrical power of hydromechanical 1 is a tube 11 due to its rod end 12 to the control unit 2. The tube 11 is placed with a gap relative to the inner surface of the rod 9. The external diameter of the tube 11 may be, for example, 10 mm, internal - 3.5-4 mm, inner diameter of the stem 9 may be 23 mm Movable operating element 6 is mechanically connected with the rod 9 and mounted on the supplied tube 13 main tip 14 that is installed tightly in the first end of the cylindrical power of hydromechanical 1 with a reciprocating motion along the longitudinal axis of the power of qi is indicacao of hydromechanical 1. Fixed operating element 7 is fixed on the outer side of the stub 15 is installed tightly in the second end of the power cylinder hydromechanical 1. On the inside of the stub 15 is fixed, for example, by threaded connection with one of its ends the tube 11. The control unit 2 is placed in the hermetically sealed casing 16 mounted on the side surface of the cylindrical power of hydromechanical 1 at its second end and is fixed, for example by set screws 17. A hermetic casing 16 channel (hole) 18, coaxial channel (hole) 19 in power cylindrical gidromehanizm 1. Inside the power cylinder hydromechanical 1 along the longitudinal axis of the sealed enclosure 16 posted by thrust washer 20 made in her cross-hole connection with the control unit 2, coaxially with the holes in communication with the control unit 2, made in a hermetically sealed housing 16 and cylindrical power gidromehanizm 1 so that they form a single channel (hole) 21. In support washer 20 is made also of the axial hole 22 under tightly inserted in the tube 11, provided with a hole 23. Between the rod 9 and the inner wall of the cylindrical power of hydromechanical 1 can be installed tightly Buchs 24, which is attached, for example, by a nut 25. A hermetic casing 16 has a cavity 2, power cylindrical hydromechanics 1 has, in addition to the rod end 12, and piston cavity 27 in the main piston 8 has openings 28, near the end of the main tip 14 has a cavity 29. The device typically also includes seals, gaskets or clutch installed in the appropriate places mate its elements to ensure the necessary conditions of integrity. The above-described construction is preferred variant embodiment of the device, although there may be other technical decisions regarding its implementation in specific cases.

In another constructive variant, the hydraulic cylinder is made dvuhklikovy (2, 4). In his power cylindrical gidromehanizm 1 coaxially with the main hollow piston 8 on the other side of the thrust washers 20 posted by is similar principal 8 extra hollow piston 30 and rod 31, while the second working element 32 made movable. It is connected with the rod 31 as well as the first movable operating element 6 with the rod 9. The second working element 32 mounted on the supplied tube 33 additional tip 34 that is installed tightly in the second end of the power cylinder hydromechanical 1 with a reciprocating motion along its longitudinal axis. Sealed body 16 is installed on the side surface of the power tsilindricheskaya 1 in its Central part. Between the rod 31 and the inner wall of the cylindrical power of hydromechanical 1 can be installed Buchs 35, similar buochs 24, secured by nuts 36 on the second end of the power cylinder hydromechanical 1. In the secondary piston 30 has openings 37, similar to the holes 28. Near the end of the additional tip 34 has a cavity 38, similar to the cavity 29.

The operation of the device is illustrated on the example of a hydraulic cylinder with a single piston rod. The device is joined with a pressure source, for example, GHS-1-DH. When turning the control element 3 (handwheel or lever) oil from the pressure source through the pressure sleeve 4 is supplied to the control unit 2, where it enters the cavity 26, which through the channels 18, 19 flows into the piston cavity 27. The main piston 8 extends, producing work. Simultaneously displaced oil from the rod end 12 falls through the hole 28, the cavity 29, the tube 11, the holes 23 and 21 in the control unit 2, and thence through the drain sleeve 5 back into the tank pressure source. Cycle - opening, while the movable work element 6 extends. When turning the control element 3 in the opposite side of the oil from the pressure source through the pressure sleeve 4 is supplied to the control unit 2. From the control unit 2 oil with a working pressure through the holes 21, 23, the tube 11, Paul is here 29 and the hole 28 falls into the rod cavity 12. The primary piston 8 is retracted, producing work. Simultaneously displaced oil from the piston cavity 27 passes through the channels 19, 18, the cavity 26 in the control unit 2, and thence through the drain sleeve 5 back into the tank pressure source. Cycle - contraction, while the movable work element 6 slides. Fixed operating element 7 in both modes is focusing device.

Hydraulic cylinder with two rods 9, 31 works in a similar way, at the same time with the movement of the first movable working element 6 is the same displacement of the second movable working element 32.

The design hydraulic cylinder ensures its high operational efficiency, due to the high reliability of the device, including when working in conditions of high loads, due to the simplicity of the design, including the lack of rotary elements, minimizing the number of the contacting surfaces of the movable elements, absence elements such as recoil, etc. Improve the operational efficiency of the device is also associated with the ability to develop significant work efforts that are transmitted directly to the movable work element 6, or on both of the movable operating element 6, 32.

An example implementation. Gidravlicheskiy with one rod 9 type CGS-1/80 and hydraulic cylinder with two rods 9, 31 type CGS-2/80 are primarily designed to lift and hold cargo, sliding or moving. Maximum working pressure 800 kg/cm2. The maximum pushing force is 140 kN, the maximum pulling force 55 kN. The stroke of the hydraulic cylinder with one piston rod 6 is 335 mm, with two rods 9, 31 - 2×270 mm, weight is 13.4 kg and 19.3 kg, respectively.

The hydraulic cylinder in accordance with the invention, has a higher operating efficiency compared with known similar devices.

1. Hydraulic cylinder containing a power cylindrical hydromechanics, provided inside the main hollow piston consisting of two parts of different diameters, the smaller of which is made elongated and forms a rod, and located along the longitudinal axis of the cylindrical power of hydromechanical tube connection, pressure and case drain hoses, hydraulically connected with the power cylinder hydromechanical through the control unit, and the working body, mechanically associated with the shaft, characterized in that the working body in the form of two working elements, the first of which is made movable and fixed on the supplied stopper main tip is installed tightly in the first end Qili power the shape of hydromechanical with the possibility of reciprocating movement along the longitudinal axis of the cylindrical power of hydromechanical, and the second work item is located on the second end of the power cylinder hydromechanical, with tube connection placed with a gap relative to the inner surface of the rod, the control unit is located on the supplied hole communication with the control unit sealed enclosure mounted on the side surface of the cylindrical power of hydromechanical and power inside cylindrical hydromechanical along the longitudinal axis of the sealed housing thrust washer made it cross-hole connection with the control unit and the axial hole is hermetically inserted in the tube connection.

2. The hydraulic cylinder according to claim 1, wherein the work items are removable.

3. The hydraulic cylinder according to claim 1, characterized in that the second working element is stationary and fixed to the outer side of the installed tightly in the second end of the power cylinder hydromechanical plugs, inside which there are fixed the ends of the tube connection.

4. The hydraulic cylinder according to claim 1, characterized in that the power cylindrical gidromehanizm coaxially with the main hollow piston on the other side of the thrust washers placed is similar to the main additional hollow piston, with the second work item is made movable, fur the automatic is connected with the rod additional hollow piston fitted and fixed on the tube an additional tip, installed tightly in the second end of the power cylinder hydromechanical with the possibility of reciprocating movement along the longitudinal axis of the cylindrical power of hydromechanical.

5. The hydraulic cylinder according to claim 3 or 4, characterized in that each movable working element between the rod and the inner wall of the cylindrical power of hydromechanical installed tightly Buchs, secured by nuts on the appropriate end of the power cylinder hydromechanical.



 

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SUBSTANCE: hydraulic cylinder comprises power cylindrical hydraulic mechanism that receives main hollow piston made of two members of different diameters, pressure and drain hoses connected with the power cylindrical hydraulic mechanism through the control block, and working member connected with the rod. The working member is made of two working members. The first working member is movable and is secured to the main tip provided with plug and mounted in the first face of the power cylindrical mechanism for permitting reciprocation along the longitudinal axis of the power hydraulic mechanism. The second working member is mounted from the side of the second face of the power cylindrical hydraulic mechanism. The pipe is mounted with a spaced relation to the inner surface of the rod. The control unit is mounted on the pressure-tight housing mounted on the side of the power cylindrical hydraulic mechanism. The space of the power cylindrical hydraulic mechanism receives bearing washer that is arranged along the longitudinal axis of the pressure-tight housing.

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